Active – OPC Unified Architecture – Part 9: Alarms & Conditions

OPC Unified Architecture – Part 9: Alarms & Conditions

v1.05.06

1Scope
2Normative references
3Terms, definitions, and abbreviations
- 3.1Terms and definitions
- 3.2Abbreviations and symbols
4Concepts
5Model
6AddressSpace organisation
7System State & Alarms
8Alarm Summary and Objects
9Alarm Metrics
Annex ARecommended localized names (Informative)
- A.1Recommended state names for TwoState Variables
- A.2Recommended dialog response options
Annex BExamples (Informative)
- B.1Examples for Event sequences from Condition instances
- B.2AddressSpace examples
Annex CMapping to EEMUA (Informative)
Annex DMapping from OPC A&E to OPC UA A & C (Informative)
Annex E– IEC 62682 Mapping
Annex FSystem State (Informative)
- F.1Overview
- F.2SystemStateStateMachineType
Bibliography

3.1.2 Active

alarm state in which the alarm condition is true

Note 1

Note 1 to entry: This definition is copied from ISA 18.2/IEC 62682.

Note 2 to entry: Other common terms defined by EEMUA Publication 191 are “Standing” for an Active Alarm and “Cleared” when the Condition has returned to normal and is no longer Active.